In preparing this Memoir, the editor naturally applied for information to Mr. Park's family, and was much gratified by discovering, that some materials, with a view to a similar undertaking, had been collected by a brother-in-law of Mr. Park, Mr. Archibald Buchanan of Glasgow; who, on being made acquainted with the editor's intention, immediately and with the greatest candour, transmitted to him the whole of his papers. These materials have been of great use in preparing the Memoir; in which the editor has likewise been assisted by much useful information which he has received from another brother-in-law of Mr. Park, Mr. James Dickson, whose name will occur in the course of the ensuing Memoir; and also from Mr. Park's two brothers, Mr. Adam Park of Gravesend, and Mr. Alexander Park of Selkirk, the latter of whom is unfortunately since dead. The editor is likewise greatly indebted to Major Rennell and to Zachary Macaulay, Esq. for several interesting particulars concerning Mr. Park; and to the latter in particular, for much valuable information relative to the trade of this country with Africa, which will be found in the Appendix to the Memoir. But his acknowledgments are due, in an especial manner, to Sir Joseph Banks; who has not only favoured the editor with the fullest communication of his correspondence with Mr. Park, and of his papers relating to this subject, but has in every other respect assisted and promoted the present undertaking with a kindness and liberality, proportioned to his sincere and constant friendship for Mr. Park, and to his uniform zeal for whatever he considers to be in any degree connected with useful knowledge and scientific discovery. * * * * * It remains only to say a few words respecting the Map, which is prefixed to this publication. The readers of Mr. Park's former Travels are already apprized, that the map which accompanied that work, was constructed by Major Rennell, whose interesting Geographical Memoir in illustration of Mr. Park's first journey, was also annexed to the quarto edition. It would have been highly gratifying to the editor of this work, and most satisfactory to the public, if the same valuable assistance could have been obtained on the present occasion. But unfortunately, Major Rennell's other engagements rendered this wholly impracticable. He had the kindness, however, to furnish the editor with some notes which he had taken, and with a construction of part of Mr. Park's route in 1805, which he had traced out from the Journal now published, when it was formerly submitted to his inspection. These papers together with Mr. Park's Journal, were placed in the hands of a respectable artist, employed by the publisher to construct the map intended to illustrate the present work; at whose request the following statement respecting certain difficulties which have occurred in its construction, is subjoined.